Once again this year, japanese beetles are devastating my fruit. I've applied grub killer to the lawn. I've sprayed trees with sevin, skipping those that are currently fruiting, and I manually chase after them at least twice a day. Last year they took every last leaf off my cherry tree. This year, to my surprise, they are eating my blueberries. Not just the leaves, they are hanging out on the berry clusters and chowing down. (I thought I was having some sort of cherry like cracking problem until today when the blueberry clusters were dark with hords of japanese beetles.)

If I wrapped the plants with shade cloth, would that deter the beetles, or just give them a place to hide?

If I did apply shade cloth, how would that impact the sweetness of whatever blueberries are left?

Any other suggestions?

Thanks.